[Lazarus] timer in a console application

[Andrea Mauri]

Dear all,
I have a console application that performs calculations iteratively on 
different objects.
I would like to set a time limit for the calculation on a single object.
i.e. calculation starts on object 1, in order to start calculation on 
object 2 the calculations on object 1 must be finished or the time limit 
for the calculation on a single object is reached. if the calculation 
time limit is reached I would like to stop calculation on object 1 and 
pass to object 2 and so on for all the objects.

Someone has suggestions?
Andrea